Hi, it's definitely not right if the casino doesn't communicate with you and doesn't answer you and doesn't even give you a reason why you still don't have your withdrawal and it's pending. I see that you have uploaded your money via sports betting and unfortunately we at CasinoGuru do not deal with that, so I think that the complaint you have filed will probably not be successful.
However, I can try to help you in advance and I will post you links where you can try to file a complaint as well.
You can find them here:
https://www.bookmakers.bet/submit-a-complaint/
https://www.top100bookmakers.com/contact-us/
https://www.sportsbookreview.com/sportsbook-complaint/
If you go for it, let me know how it goes and whether you got your money or not.